var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var fs = require('fs');

// 确保上传目录存在
const uploadDir = path.join(__dirname, 'uploads');
if (!fs.existsSync(uploadDir)){
    fs.mkdirSync(uploadDir);
}



// 添加上传路由
var indexRouter = require('./routes/index');
var commonRouter = require('./routes/common');
var usersRouter = require('./routes/users');
var uploadRouter = require('./routes/upload');
var storeItemRouter = require('./routes/storeItem');
var app = express();

// 设置跨域请求头
app.use(function(req, res, next) {
  res.setHeader('Access-Control-Allow-Origin', '*');
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE');
  res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization');
  next();
});

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/uploads', express.static('uploads'));

app.use('/', indexRouter);
app.use('/common', commonRouter);
app.use('/upload', uploadRouter);
app.use('/users', usersRouter);
app.use('/storeItem', storeItemRouter);

 
// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
